{"id":3980,"date":"2020-08-30T10:17:10","date_gmt":"2020-08-30T04:47:10","guid":{"rendered":"https:\/\/kseebsolutions.guru\/?p=3980"},"modified":"2021-07-02T15:04:05","modified_gmt":"2021-07-02T09:34:05","slug":"kseeb-solutions-class-8-geography-chapter-4","status":"publish","type":"post","link":"https:\/\/kseebsolutions.guru\/kseeb-solutions-class-8-geography-chapter-4\/","title":{"rendered":"KSEEB Solutions for Class 8 Geography Chapter 4 Hydrosphere"},"content":{"rendered":"

Students can Download Geography Chapter 4 Hydrosphere Questions and Answers, Notes, KSEEB Solutions for Class 8 Social Science<\/a>\u00a0helps you to revise complete Karnataka State Board Syllabus and score more marks in your examinations.<\/p>\n

Karnataka State Syllabus Class 8 Social Science Geography Chapter 4 Hydrosphere<\/h2>\n

Class 8 Social Science Hydrosphere Textual Questions and Answers<\/h3>\n

I. Fill In The Blanks:<\/p>\n

Question 1.
\nThe average depth of the continental shelf is _______
\nAnswer:
\n100 fathoms<\/p>\n

Question 2.
\nOne fathom is equal to _______
\nAnswer:
\n6 ft<\/p>\n

\"KSEEB<\/p>\n

Question 3.
\nThe deepest place in the pacific ocean is _______
\nAnswer:
\nThe challenger deep<\/p>\n

Question 4.
\nThe average salinity of the ocean water is _______
\nAnswer:
\n35 PPT<\/p>\n

Question 5.
\n_______ tides occur during full moon
\nAnswer:
\nSpring<\/p>\n

II. Answer The Following Questions:<\/p>\n

Question 1.
\nWhat is a hydrosphere?
\nAnswer:
\nThe hydrosphere is the most important layer of earth. Nearly 71% of the total area of the earth is covered by water bodies like oceans, seas, lakes, rivers, etc. All these water bodies are called as Hydrosphere.<\/p>\n

Question 2.
\nMention the four major parts of the ocean floor.
\nAnswer:
\nThe four major parts of the ocean floor are<\/p>\n

    \n
  1. The Continental Shelf<\/li>\n
  2. The Continental slope<\/li>\n
  3. The Deep sea plain and<\/li>\n
  4. The Ocean deep.<\/li>\n<\/ol>\n

    Question 3.
    \nState the difference between ocean currents and tides.
    \nAnswer:
    \nOcean currents:<\/p>\n

      \n
    • Ocean currents are the regular movement of ocean water from one region to another.<\/li>\n
    • Ocean currents are of two types \u2018warm currents and cold currents.<\/li>\n<\/ul>\n

      Tides:<\/p>\n

        \n
      • \u00a0Tides are the periodic rise and fall in the sea or ocean level.<\/li>\n
      • They occur due to gravitational attraction by the moon, gravitational force by the sun, rotation of the earth and centrifugal force of the earth.<\/li>\n
      • The two types of tides are spring tide and Neap tides.<\/li>\n<\/ul>\n

        \"KSEEB<\/p>\n

        Question 4.
        \nDistinguish between spring tide and neap tide.
        \nAnswer:
        \nSpringtide: spring tides take place when the earth the moon and the Sun are in the same straight line. E.g. New moon and Full moon days.<\/p>\n

        Neap tides: Neap tides occur in the first quarter and last quarter days in the phase of the Moon. During this time the sun and the earth are in the same straight line and the moon is in a right angle to the earth.<\/p>\n

        Question 5.
        \nHow can we conserve the oceans?
        \nAnswer:
        \nWe can conserve oceans through following-methods:<\/p>\n

          \n
        1. Oil transportation should be done through pipelines.<\/li>\n
        2. \u00a0Nuclear waste should not be dumped into the sea or ocean.<\/li>\n
        3. Dumping of any waste near the ports and harbours must be controlled.<\/li>\n
        4. Ore deposition and mineral exploitation along the coast must be controlled.<\/li>\n
        5. Exploitation and destruction of beaches must be controlled.<\/li>\n<\/ol>\n

          III. MATCH THE FOLLOWING:<\/p>\n\n\n\n\n\n\n\n\n
          A<\/td>\nB<\/td>\n<\/tr>\n
          1. Fathom<\/td>\n(a) deep sea plain<\/td>\n<\/tr>\n
          2. Oyashio<\/td>\n(b) eastern coast of U.S.A<\/td>\n<\/tr>\n
          3. Gulf stream<\/td>\n(c) cold current<\/td>\n<\/tr>\n
          4. Sea mounts<\/td>\n(d) Indian ocean<\/td>\n<\/tr>\n
          5. Agulhas current<\/td>\n(e) depth of ocean<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          Answer:<\/p>\n\n\n\n\n\n\n\n\n
          A<\/td>\nB<\/td>\n<\/tr>\n
          1. Fathom<\/td>\n(e) depth of the ocean<\/td>\n<\/tr>\n
          2. Oyashio<\/td>\n(c) cold current<\/td>\n<\/tr>\n
          3. Gulf stream<\/td>\n(b) eastern coast of U.S.A<\/td>\n<\/tr>\n
          4. Seamounts<\/td>\n(a) deep-sea plain<\/td>\n<\/tr>\n
          5. Agulhas current<\/td>\n(d) Indian ocean<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          IV. Define The Following :<\/p>\n

          1. Continental shelf: This is the shallow area along the sea coast. This part is bordered by the sea coast on one side and continental slope on the other side. The average depth of the continental shelf is 100 fathoms.<\/p>\n

          2. Salinity: It is the percentage of salts dissolved in the sea or ocean water. The average salinity of the ocean water is 35 PPt. The salinity of ocean water is very high near the tropics and it is very low near the poles.<\/p>\n

          \"KSEEB<\/p>\n

          3. Warm and cold currents :
          \nThese currents originate and flow from the equatorial regions to subpolar regions. These currents originate in the Polar Regions and flow towards the equatorial region.<\/p>\n

          4. High tide and Low tide: The tide, also known as flood tide, and low tide also known as Ebb tide.<\/p>\n

          5. Benguela current: It is the South Atlantic Ocean cold current.<\/p>\n

          6. Tides: Tides are the periodic rise and fall in the sea or ocean level.<\/p>\n

          Class 8 Social Science Hydrosphere Additional Questions and Answers<\/h3>\n

          I. Multiple Choice Questions:<\/p>\n

          1. The small semi-circular water bodies partially surrounded by land are called _____
          \n(a) Bays
          \n(b) Gulf
          \n(c) Sea
          \n(d) OceAnswer:
          \nAnswer:
          \n(a) Bays<\/p>\n

          2. This is the shallow area along the sea coast _____
          \n(a) Continental slope
          \n(b) Continental shelf
          \n(c) The deep-sea plain
          \n(d) The ocean deep
          \nAnswer:
          \n(b) Continental shelf<\/p>\n

          3. The deep-sea plain is also known as _____
          \n(a) Ocean deep
          \n(b) Deep-sea.
          \n(c) Abyssal plain
          \n(d) Obyssal plain.
          \nAnswer:
          \n(c) Abyssal plain<\/p>\n

          4. The ocean deeps are also called _____
          \n(a) Obyssal plain
          \n(b) The ocean deep
          \n(c) Abyssal plain
          \n(d) Ocean trenches.
          \nAnswer:
          \n(d) Ocean trenches.<\/p>\n

          \"KSEEB<\/p>\n

          5. The average salinity of the- ocean water is _____
          \n(a) 35 PPT
          \n(b) 37 PPT
          \n(c) 36 PPT
          \n(d) 39 PPT
          \nAnswer:
          \n(a) 35 PPT<\/p>\n

          II. Fill In The Blanks:<\/p>\n

          Question 1.
          \n______ are a deep and large expanse of water found between the continents.
          \nAnswer:
          \nOceans<\/p>\n

          Question 2.
          \n______ is a part of an ocean or sea that penetrated into the land.
          \nAnswer:
          \nGulf<\/p>\n

          Question 3.
          \n______ takes place when the earth, the moon, and the sun are in the same straight line.
          \nAnswer:
          \nSpring tides<\/p>\n

          Question 4.
          \nDuring ______ the sun and the earth are in the same straight line.
          \nAnswer:
          \nNeap tides<\/p>\n

          \"KSEEB<\/p>\n

          Question 5.
          \nThe coldest place on earth is ______
          \nAnswer:
          \nVostots<\/p>\n

          III. Answer The Following Questions:<\/p>\n

          Question 1.
          \nWhy the temperature of the ocean water near the equator is more than Arctic Arctic and the Antarctic circles?
          \nAnswer:
          \nIt is because the sunlight can penetrate into the ocean only upto a depth of 200 meters.<\/p>\n

          Question 2.
          \nWhat are ocean currents?
          \nAnswer:
          \nOcean currents are the regular movement of ocean water from one region to another.<\/p>\n

          Question 3.
          \nName the south Indian ocean currents.
          \nAnswer:
          \nThe south Indian ocean currents are Mozambique, Madagascar, Agulhas as warm currents and west Australian as cold currents.<\/p>\n

          Question 4.
          \nWhat are tides? How do they occur?
          \nAnswer:
          \nTides are the periodic rise and fall in the sea or ocean level. They occur due to gravitational attraction by the moon, gravitational force by the sun, rotation of the earth, and centrifugal force of the earth.<\/p>\n

          \"KSEEB<\/p>\n

          Question 5.
          \nName the different kinds of tides.
          \nAnswer:
          \nSpringtide and Neap tide.<\/p>\n

          Question 6.
          \nHow are tides useful to mankind?
          \nAnswer:
          \nTides are directly and indirectly useful to mankind in the following ways. It helps navigation<\/p>\n

            \n
          1. Helps in the location of ports and harbours.<\/li>\n
          2. Tides help to keep the harbours clean.<\/li>\n
          3. They help the fishing.<\/li>\n
          4. Help to generate energy in the form of tidal energy.<\/li>\n<\/ol>\n

            V. Terms To Remember:<\/p>\n

            1. Gulf stream: Warm current.<\/p>\n

            2. Salinity: The percentage of salts dissolved in the sea or ocean water.<\/p>\n

            3. Warm current: It originates and flows from the equatorial regions to wub- polar regions.<\/p>\n

            \"KSEEB<\/p>\n

            4. Kuroshio current: Honshu Hokkaido fishing ground.<\/p>\n

            5. Flood tides: Flood tides.<\/p>\n

            6. Tidal energy: Generates electricity through tides.<\/p>\n","protected":false},"excerpt":{"rendered":"

            Students can Download Geography Chapter 4 Hydrosphere Questions and Answers, Notes, KSEEB Solutions for Class 8 Social Science\u00a0helps you to revise complete Karnataka State Board Syllabus and score more marks in your examinations. Karnataka State Syllabus Class 8 Social Science Geography Chapter 4 Hydrosphere Class 8 Social Science Hydrosphere Textual Questions and Answers I. Fill …<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/posts\/3980"}],"collection":[{"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/comments?post=3980"}],"version-history":[{"count":0,"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/posts\/3980\/revisions"}],"wp:attachment":[{"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/media?parent=3980"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/categories?post=3980"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/tags?post=3980"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}